In the true spirit world, secret manuals were generally collected by major sects, and they were absolutely forbidden from being spread to outsiders. Only some ordinary secret manuals could be passed on to their family members. Some important secret manuals could not be passed on even to their family members. Otherwise, they would be crippled of their martial arts or even killed on the spot.
It was precisely because of this that the number of secret manuals that were made public on the continent was very small. Even if they were made public, they were all mainland goods. You could avoid forcing yourself to cultivate them, but it was absolutely impossible to cultivate them to a high degree of success.
